It would depend on the sprockets used, and rims and tires. Some cr500's have been modified for the street and will go much faster than bikes with the stock tires and rims. In stock form, 70 to 90 mph. Running the 500 at redline is crazy enough in first or second gear. Most riding is not at full throttle and this bike is not ridden at top speeds. In was made to handle speeds from 3 to 65 mph and pushing the limits on a cr500 isn't done then talked about.
not that fast
Not as fast as i am!
Yz250
fast enough
fast
A 70cc dirt bike will achieve a top speed of around 40mph
very fast no it bout 130
it can reach a speed of 90mph its fast!
it all dipends on the bike
about 40mph
no not at all
210